public void WhenAddTrait_AndNullDependencyResolver_ShouldAdd()
{
// Arrange
var container = new UnityContainer();
var parent = new StubObservableObject();
var collection = new ViewModelTraitCollection(parent, new NullTraitDependencyResolver());
// Act
var b = collection.Add <StubViewModelTrait>();
// Assert
Assert.That(b, Is.Null);
Assert.That(collection.Contains <StubViewModelTrait>(), Is.False);
}
public void WhenDisposingTrait_ShouldDisposeChildren()
{
// Arrange
var vm = new StubObservableObject();
var trait = new StubViewModelTrait(vm);
var aDisposableObject = new StubDisposable();
aDisposableObject.DisposeWith(trait);
trait.Dispose();
Assert.That(trait.IsDisposed, Is.True, "Trait");
Assert.That(aDisposableObject.IsDisposed, Is.True, "Child");
}
public void WhenAddTraitShouldAdd()
{
// Arrange
var container = new UnityContainer();
var parent = new StubObservableObject();
var collection = new ViewModelTraitCollection(parent, new TraitDependencyResolver(container));
// Act
var b = collection.Add <StubViewModelTrait>();
// Assert
Assert.That(b, Is.Not.Null);
Assert.That(collection.Contains <StubViewModelTrait>(), Is.True);
Assert.That(b.Target, Is.EqualTo(parent));
}
public void WhenDisposingParentShouldDispose()
{
// Arrange
var container = new UnityContainer();
var parent = new StubObservableObject();
var collection = new ViewModelTraitCollection(parent, new TraitDependencyResolver(container));
var child = new StubDisposable();
// Act
var b0 = collection.Add <StubViewModelTrait>();
child.DisposeWith(b0);
parent.Dispose();
// Assert
Assert.That(parent.IsDisposed, Is.True);
Assert.That(b0.IsDisposed, Is.True);
Assert.That(child.IsDisposed, Is.True);
}
public void WhenAddTraitTwiceShouldReplace()
{
// Arrange
var container = new UnityContainer();
var parent = new StubObservableObject();
var collection = new ViewModelTraitCollection(parent, new TraitDependencyResolver(container));
// Act
var b0 = collection.Add <StubViewModelTrait>();
b0.Id = "b0";
var b1 = collection.Add <StubViewModelTrait>();
b1.Id = "b1";
// Assert
Assert.That(b0, Is.Not.Null);
Assert.That(b1, Is.Not.Null);
Assert.That(collection.Contains <StubViewModelTrait>(), Is.True);
Assert.That(b0.IsDisposed, Is.True);
Assert.That(b1.IsDisposed, Is.False);
Assert.That(b1.Target, Is.EqualTo(parent));
}
